WormMine: ExpressionPattern Expr51

• Pattern: b-galactosidase expression in the spermathecae and the three rectal epithelial cells. Staining in the rectal area was first observed in L1 larvae whilst expression in the spermathecae appeared as the structure formed in L4 larvae. Variable staining was also seen throughout the uterus. In the mature gonad staining appeared to be in the two sets of two large toroidal epithelial cell, Ut-1 and Ut-2. Staining was also observed in the large, multinucleate H-shaped Use cell which attaches the uterus to the seam cells and to the four epithelial cells Ut-1 and Ut-2. The Uv-1 cells did not appear to stain. Individual worms often showed only one component of this expression pattern. In the male, expression was observed to be dispersed in what appeared to be all or part of the proctodeum.
• Primary Identifier: Expr51
• Remark: Fusion junction is at position 21392 in F18G5 ...GTATTCTCTGAGAGAAGGAATGATC/lacZ Young and Hope (1993). Dev. Dynam. 196:124-132 = [cgc1752]. Legacy Data: Author "Arnold JM" "Guo J" "Hope IA"Date 1992-01. life_stage summary : postembryonic

6 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
an accordion-like tube that contains sperm and is the site of oocyte fertilization.	spermatheca		WBbt:0005319
membranous cell attaches the uterus to the lateral epidermis (seam) and forms a thin laminar process dorsal to the vulva. formed by fusion of eight pi cell progeny and AC.	uterine seam cell	utse	WBbt:0006789
epithelium connecting intestine and anus.	rectal epithelium		WBbt:0005800
uterine toroidal epithelial cell.	ut2		WBbt:0006786
Essensially a modified rectum, junction between the alimentary and genital tracts in the male.	proctodeum		WBbt:0006795
uterine toroidal epithelial cell.	ut1		WBbt:0006785

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00003981	pes-8	F18G5.2	Caenorhabditis elegans

5 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The stage that begins when a C.elegans individual is fully-developed and has reached maturity.		adult Ce	WBls:0000041
	The third stage larva. At 25 Centigrade, it ranges 32.5-40 hours after fertilization, 18.5-26 hours after hatch.		L3 larva Ce	WBls:0000035
	The second stage larva. At 25 Centigrade, it ranges 25.5-32.5 hours after fertilization, 11.5-18.5 hours after hatch.		L2 larva Ce	WBls:0000027
	The fourth stage larva. At 25 Centigrade, it ranges 40-49.5 hours after fertilization, 26-35.5 hours after hatch.		L4 larva Ce	WBls:0000038
	The first stage larva. At 25 Centigrade, it ranges 14-25.5 hours after fertilization, 0-11.5 hours after hatch.		L1 larva Ce	WBls:0000024